1. Department of Nursing, Medical College, Hanyang University, Seoul, Korea
2. Hospice Center, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
3. College of Nursing, Kyungpook University, Daegu, Korea
4. College of Nursing, The Catholic University of Korea, Seoul, Korea
5. Department of Social Welfare, Chungju National University, Chungju, Korea
6. Department of Nursing, Sahmyook University, Seoul, Korea
7. Department of Nursing, Sangji University, Wonju, Korea
8. Graduate School of Information in Clinical Nursing, Hanyang University, Seoul, Korea